réttari

m. justiciary, justice.

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a, m. [Germ. richter], a justiciary, justice, mid. Lat. justiciarius, appointed by the king, Edda 93, Gþl. 141, 195, Bs i. 769, Fms. x. 88, N. G. L. iii. 77, rare and not classical, and appears about the middle of the 13th century: afterwards used of a headsman, Bs. ii. (16th century.)